Don't you understand? Modern "Leftists" know the uncontestable "truth". Naturally, FdB's self-esteem is sufficient for him to "know it when I see it" with an unimpeachable finality. (As for positive and normative, um... what's that?)

Among other things, this means that if, in some polity, an election candidate (such as, oh, Saddam Hussein) wins 100%, that democracy must so perfect that "the will of the people" has been fully revealed, and all the "erroneous" beliefs have been completely destroyed by a thorough "education". Three cheers for the Democratic Republic of America!